KR101636472B1 - Heat conduction measuring device and method for burn degree - Google Patents

Heat conduction measuring device and method for burn degree Download PDF

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KR101636472B1
KR101636472B1 KR1020140187910A KR20140187910A KR101636472B1 KR 101636472 B1 KR101636472 B1 KR 101636472B1 KR 1020140187910 A KR1020140187910 A KR 1020140187910A KR 20140187910 A KR20140187910 A KR 20140187910A KR 101636472 B1 KR101636472 B1 KR 101636472B1
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thermal
thermal paper
paper
thermal conductivity
lamination member
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KR1020140187910A
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KR20150075384A (en
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이준용
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가톨릭대학교 산학협력단
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Priority to PCT/KR2014/012797 priority Critical patent/WO2015099444A1/en
Priority to US14/426,715 priority patent/US9826928B2/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/44—Detecting, measuring or recording for evaluating the integumentary system, e.g. skin, hair or nails
    • A61B5/441—Skin evaluation, e.g. for skin disorder diagnosis
    • A61B5/445—Evaluating skin irritation or skin trauma, e.g. rash, eczema, wound, bed sore
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
    • G01K11/12—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in colour, translucency or reflectance
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/18—Investigating or analyzing materials by the use of thermal means by investigating thermal conductivity

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  • Molecular Biology (AREA)
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  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Engineering & Computer Science (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Biomedical Technology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dermatology (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Immunology (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)

Abstract

The present invention discloses an apparatus and method for measuring thermal conductivity that can easily and accurately obtain the degree of thermal damage of a target tissue.
The present invention relates to a thermosensitive recording medium comprising a thermal paper lamination member 10 in which a plurality of thermal paper 11 are laminated so as to form a layer and a pressing member 11 for pressing the lamination member 10 to maintain the thermosensitive paper 11 in close contact 21, 22), it is possible to obtain the degree of thermal damage according to the depth of the target tissue to the thermal damage by the depth of the lamination member.

Description

TECHNICAL FIELD [0001] The present invention relates to an apparatus and method for measuring image thermal conductivity,

The present invention relates to an apparatus and a method for measuring thermal conductivity, and more particularly, to a thermal conductivity measuring apparatus and a thermal conductivity measuring apparatus, which are capable of estimating thermal damage degree, showing actual heat transfer and distribution patterns in animal and human skin images, ≪ / RTI >

In order to reduce the mortality rate of burns and to minimize the economic and social losses due to the aftereffects of burns in an increasing number of burn patients every year, systematic burn patient delivery system, development of specialized materials for burn treatment and securing treatment facilities are essential .

However, at present, only the level of burning is classified at 1 to 3 degrees according to visual and clinical features. For professional burn treatment, accurate and detailed diagnosis and classification of the burns is required, which is the basis for the development of specialized therapies for different treatment methods depending on the degree and location of the burn.

As a method used for diagnosis of burns, in order to grasp the degree of image damage as in Korean Patent No. 10-0596703, an appropriate level of heat is applied to the skin of the test subject to help correct diagnosis and treatment A standard image wound image generation device and the like are used.

Thermal damage to the tissue begins when heat is transferred from various sources. The heat transfer to these tissues is the first step of the image, which not only explains the characteristics of various kinds of images, but also the basic principle used for the development of image protection equipment and the development of weapons. However, heat transfer to these tissues is invisible and there is no easy way to measure them intuitively. Therefore, animal experiments or physical and mathematical simulation methods have been used. They rely on complex mathematical formulas and have difficulty simulating them through special programs.

Korean Patent No. 0596703

SUMMARY OF THE INVENTION The present invention has been made in view of the above, and it is an object of the present invention to provide an apparatus and a method for measuring thermal conductivity and a method of measuring thermal conduction and distribution of heat from a heat source to a skin tissue in a simple and intuitive manner.

It is another object of the present invention to provide an apparatus and method for measuring the degree of thermal damage from various heat sources without using an animal.

According to an aspect of the present invention, there is provided an image thermal conductivity measuring apparatus including: a plurality of thermal paper; A thermal paper lamination member laminated such that the thermal paper is layered; And a top plate frame on which the lamination members are stacked, so that the degree of image can be measured while the thermal paper is stacked.

More preferably, the pressing member includes a pressing member which presses the lamination member so that the thermal paper can be laminated and kept in a close contact state.

More preferably, the lamination member is laminated on a top plate frame made of a heat-resistant silicon material.

More preferably, the upper frame is formed on a lower frame capable of plastic deformation.

In addition, more preferably, the lamination member applies pressure oil between the thermal paper and the thermal paper to closely contact the thermal paper.

More preferably, the contact oil is made of any one of oil and thermal grease.

More preferably, the thermal paper is made of K91HG-CE thermal paper.

More preferably, the pressing member is made of a magnetic material, a clip, a band, or a clamp.

More preferably, the reference hole penetrates through the laminating member so as to establish a reference point in three-dimensional modeling.

According to another aspect of the present invention, there is provided a method of measuring a thermal conductivity, the method comprising: a thermal paper laminating step of determining a number of thermal paper sheets constituting a lamination member according to a thermal conductivity of a target tissue; A preparing step of preparing heat to be applied to a lamination member in which a plurality of thermal paper are stacked; A heating step of applying heat to be tested on the upper surface of the lamination member; And a step of estimating thermal conductivity in the tissue by transforming the thermal damage degree depending on the depth of the thermal paper to the thermal damage according to the depth of the target tissue to estimate the thermal conductivity in the tissue, Heat conduction process and its distribution pattern are obtained.

More preferably, the preparation step may include: a temperature regulating step of regulating a temperature of a top plate frame on which the lamination member can be placed so as to maintain a temperature similar to a target tissue; And attaching the upper plate frame to the lower plate frame after plastic deformation to form a curved surface when the measurement of the curved surface is required.

More preferably, a three-dimensional reconstruction step is performed in which the heat to be tested is applied to the upper surface of the lamination member in the heating step, and then the thermal image displayed on the thermal paper is reconstructed in three dimensions for each layer of the lamination member .

Further, more preferably, in the step of laminating the thermal paper, the number of laminated layers of the thermal paper = the thickness of the paper * (kp / kd) / Xd, wherein kp = thermal paper thermal conductivity constant, kd = thermal conductivity constant of the paper, Xd = thermal paper thickness.

More preferably, the thermal damage depth of the target tissue in the thermal conductivity estimating step is equal to the number of thermally-heated thermal paper layers * Xd * (kd / kp), where kp = thermal paper thermal conductivity constant, kd = The thermal conductivity constant of the tissue is Xd = thermal paper thickness.

As described above, the apparatus and method for measuring the thermal conductivity according to the present invention are simple and intuitive and show the actual heat transfer and distribution pattern in the skin image of an animal or a human body, so that the measurement is simple and the accurate thermal conductivity can be measured.

In addition, the present invention can obtain accurate thermal conductivity and degree of heat damage of an animal or a human body without performing an animal experiment.

In addition, the present invention can accurately estimate the degree of thermal damage of each depth in the tissue through the arithmetic calculation based on the thermal damage degree of the laminated thermal paper.

1 is a perspective view showing a thermal conductivity measuring apparatus according to a first preferred embodiment of the present invention,
Fig. 2 is a cross-sectional view showing the lamination member shown in Fig. 1,
FIG. 3 shows the results of 21 stage gray scale test pattern printout and gray scale profile plot,
Fig. 4 shows the results of reaction temperature analysis of each gray scale of K91HG-CE thermal paper,
5 is a perspective view illustrating a thermal conductivity measuring apparatus according to a second preferred embodiment of the present invention.
6 is a state diagram schematically showing the step of estimating thermal conductivity,
7 is a flowchart showing a method of measuring thermal conductivity.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a thermal conductivity measuring apparatus and method according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view showing a thermal conductivity measuring apparatus according to a first preferred embodiment of the present invention, FIG. 2 is a cross-sectional view illustrating the lamination member shown in FIG. 1, FIG. 5 is a perspective view showing a thermal conductivity measuring apparatus according to a second preferred embodiment of the present invention, and FIG. 5 is a perspective view showing a thermal conductivity measuring apparatus according to a second preferred embodiment of the present invention. FIG. 6 is a state diagram schematically showing the step of estimating thermal conductivity, and FIG. 7 is a flowchart showing a method of measuring thermal conductivity.

1 and 2, a thermal conductivity measuring apparatus according to a preferred embodiment of the present invention includes a lamination member 10 in which a plurality of thermal paper 11 are laminated, a pressing member 21 for pressing the lamination member 10 And a lower frame 30 and a lower frame 40 on which the lamination members 10 are mounted.

The lamination member 10 is constituted by stacking a plurality of sheets of thermal paper 11. The thermal paper 11 is a special paper that reacts with heat, and only the portion where heat is applied is turned to black. Thermal paper is a piece of paper that is applied to the surface of a thermal layer containing chemical substances that develop when exposed to heat, and characters or symbols can be recorded simply by heating. It is mainly used as thermal printer paper or facsimile recording paper. The two components react to form a color, and the colorless leuco dye, which emits electrons, and the solid color that receives electrons are formed into fine granules, and the degree of color development depends on the temperature of the heat applied to the paper together with the binder. Further, in addition to the thermal paper 11, a paper which can be visually recognized by applying heat may be used.

In the present invention, thermal paper is selected based on the following conditions in order to select the most preferable thermal paper. First, it needs to have thermal resolution capability. In other words, the heat temperature distribution transmitted to the thermal paper must be expressed in gray grayscale by delicately reacting the thermal material, so that the temperature distribution at the time can be inversely calculated based on the thermal trace expressed in the thermal paper. Also, the gray concentration expressed after the thermal reaction has to be maintained after the heat source has been removed, which means that the chemical reaction should not occur. Second, the thermal paper should react from the temperature that causes the actual image. If the thermal paper reacts at a temperature that is not related to the actual image, or if the thermal paper reacts at too high a temperature, it becomes less useful. Third, stable requirements are required without thermal ignition or melting of the thermal paper at the commercial temperature.

Accordingly, in the present invention, the following process is performed to select the thermal paper that can satisfy the above requirements.

Generally, thermal paper is used in thermal printers to print letters on receipts or faxes. However, ordinary thermal paper has a characteristic of strongly coloring when it exceeds the value of a specific temperature range in order to output black and white text. Therefore, it is difficult to confirm the color development step according to the temperature, which means that the pyrolysis ability is very poor, which means that it is not suitable for use as the thermal paper of the present invention.

Accordingly, the thermal paper is selected by using a special thermal image printer which is designed for outputting an image such as an ultrasound image instead of black and white text and can express a specific gray scale. First, the gray scale is determined according to an appropriate temperature matching between the thermal image printer and the thermal paper and a color developing ability of the thermal paper. Therefore, in the present invention, thermal degradation ability of various thermal image printers was measured using various thermal paper such as K91HG-CE, UPP-110HD and TPH-110HD. Through the above process, the thermal degradation ability of the corresponding thermal paper can be determined by observing the pattern of reproducing the grayscale increasing pattern on the straight line from white to black for the 21st gray scale test pattern. Accordingly, in the present invention, the gray-scale test pattern is divided into a plurality of cases through a combination of thermal image printers and thermal paper, and after the output of the corresponding result is scanned, a gray scale profile is measured, Respectively.

Fig. 3 shows the results of 21 stage gray scale test pattern printout and gray scale profile plot for selecting thermal paper. From the above results, it can be seen that the gray scale profile plot shows K91HG-CE thermal paper showing the pattern most similar to the plot of the test pattern in black step form. If it is determined that a specific image printer is selected, it is most preferable to use the thermal paper manufactured or recommended by the image printer company. However, since it is not so, the selection process of the present invention for selecting the thermal paper as described above is a very meaningful operation . Therefore, the thermal paper showing the most consistent thermal decomposition ability in the entire region from the test results is determined to be K91HG-CE thermal paper, and it is judged that the thermal paper is most suitable for the present invention.

The reaction temperature of each gray scale of K91HG-CE thermal paper selected by the above test is shown in FIG. 4. The reaction temperature of each gray scale of K91HG-CE thermal paper is shown in a similar pattern to the first order function As shown in FIG.

Previous studies have shown that when the heat applied to the skin exceeds 51 ° C, the epidermis breaks rapidly as it becomes thermally saturated. It is also known that the degeneration of collagen, which constitutes the majority of the connective tissue of the dermis and the lower part, has the best correlation with the degree of burn. The destruction of the above-mentioned collagen fibers is not known until 57 deg. C, but it is reported that the cleavage starts at 60 deg. C and the structural modification occurs at 65 deg. Therefore, since the reaction starts at 56 ° C, it can be assumed that the image of the dermis, which determines the depth of the image, is proceeding as soon as the thermal reaction starts. Therefore, it can be confirmed that the thermal paper exhibits an adiabatic reaction from the temperature of the initial tissue reaction step due to the image, and is suitable for the image model.

On the other hand, the number of laminated thermal paper 11 of the lamination member 10 is determined by a thermal damage estimation method or a laminated water induction method of a thermal paper lamination step. When standardized, it may be stacked according to the number of standard tissues (classified according to specific areas of the skin). The thermal oil may be applied between the thermal paper 11 and the thermal paper 11 to improve the thermal conductivity. The oil-tightening oil 12 plays a role of bringing the thermal paper 11 in close contact with each other and can use oil or thermal grease. In the system in which the thermal paper 11 is pressed so as to be in close contact with the thermal paper 11 without any gaps, the thermal paper 12 may not be applied. The kind of the adhesive oil 12 can be variously changed according to the thermal conductivity of the target tissue. At this time, the adhesive oil 12 can be any substance capable of improving the thermal conductivity by improving the adhesion .

The reference hole 11a penetrates through the lamination member 10 so as to establish a reference point in three-dimensional modeling. The reference holes 11a are formed on the same vertical line, and are preferably formed at two positions at regular intervals, and may be formed at two or more positions.

The upper frame (30) has a flat plate shape. The upper frame (30) is preferably made of a heat-resistant silicon material. The upper plate frame 30 is intended to reflect the temperature of the surface of the skin to be measured similarly to the thermal paper. This is because the upper plate frame 30 is heated similar to the surface temperature of the skin, 11) to reflect the surface temperature of the actual skin. Therefore, a top plate frame made of a silicon material is added to the present invention so as to suitably implement the above object. Therefore, when the top plate frame 30 is made of a heat-resistant silicone material, it is advantageous to simulate the thermal paper 11 in a state similar to the skin. When the top plate frame 30 is heated to a high temperature and the moisture is removed and the lamination member 10 is placed on the top plate frame 30, the temperature of the lamination member 10 can be maintained similar to the skin,

The lower frame (40) on which the upper frame (30) is placed has a flat plate shape. The lower frame 40 is made of a metal material capable of plastic deformation, and is preferably made of stainless steel. The lower frame 40 is preferably made of stainless steel, which can maintain a bent state similar to the shape to be measured, in the case where measurement is required in a form other than a flat surface such as a curved surface. The upper frame 30 is attached to the upper surface of the lower frame 40 while the lower frame 40 is deformed. At this time, the lower frame 40 is bonded to the upper frame 30 using a double-sided tape. An adhesive may be used in addition to the double-sided tape, or a separate fastening member such as a bolt may be used to attach the two members.

The pressing member 21 is made of a magnetic material. It is preferable to use a neodymium magnet having a strong magnetic force. When the pressing member 21 is placed on the lamination member 10 in a state where the upper frame 30 and the lamination member 10 are placed on the lower plate frame 40 made of a metal material and the pressing force is applied to the lamination member 10 by the magnetic force And the thermal paper 11 laminated due to the pressing force is brought into close contact so that no air flows into the gap.

Also, as shown in Fig. 5, the pressing member 22 may be made of a clip or band having an elastic force. When the lamination member 10 is sandwiched between the both ends of the pressing member 22 so as to have an elastic force, the elasticity of the pressing member 22 makes it possible to form the lamination member 10 The thermal paper 11 of the printer 1 is closely contacted to prevent the air from flowing into the gap. When a clip or a band having a predetermined thickness is used as the pressing member 22, a groove may be formed in the upper plate frame 30 so that the pressing member 22 can be inserted. The pressing member 22 may also be clamped. The clamp generally refers to a device that presses using a screw fastening method. A pressing member in the form of a clip capable of clipping the lamination member 10 and the top plate frame 30 and the bottom plate frame 40 so that the heat of the top plate frame 30 can be smoothly transmitted to the lamination member 10 .

On the other hand, in the case where there is no pressing member (21, 22) or fixing device, the phenomenon that the contact layer of the uppermost layer is formed in a high-temperature heat source can be observed, but when it is fixed, it is confirmed that the heat transfer to the lower layer occurs well I could. When the adhesive acting as a thermal grease is applied uniformly between the thermal paper 11 instead of the pressing members 21 and 22, the thermal grease is applied to the thermal paper 11 so as to prevent air from flowing into the gap between the thermal paper 11 And thus the embodiment in which the pressing member 22 is not provided is also possible. At this time, the thermal grease must maintain the adhesion between the pre-thermal paper 11 and each thermal paper 11 after the thermal posture has adhesive force and thermal stability enough to be easily separated without damaging the thermal traces. Also, in the case of using the adhesive oil 12 instead of the pressing members 21 and 22, it is possible to stack the thermal paper 11 in a post-it-type manner, so that it can be laminated on the desired curved surface, After testing on the surface, the thermosensitive part can be reused as soon as it is cut out in sheet form. In addition, since the temperature according to the gray scale level expressed in the thermal paper 11 can be confirmed, the temperature can be immediately estimated from the thermal distribution shown in this embodiment. Therefore, by looking at the heat transmission (the number of thermal papers showing the heat trace) and the heat distribution pattern (the heat distribution pattern expressed in gray scale) shown in this embodiment, it is possible to provide a table that can convert the heat transferred to the actual tissue, It is also possible to estimate the conduction depth and distribution.

The measurement method of the thermal conductivity measuring apparatus, which is a preferred embodiment of the present invention, is as follows.

As shown in FIG. 7, the measuring method of the thermal conductivity measuring apparatus includes a stacking step S1, a preparing step S2, a heating step S3, an estimating step S4, and a three-dimensional reconstruction step S5.

The lamination step S1 is a step of determining the number of laminated layers of the thermal paper 11 constituting the lamination member 10 according to the thermal conductivity and the thickness of the target tissue. The number of thermal paper sheets necessary for the lamination is obtained by using the lamination water induction method of the thermal paper lamination step to be described later. When standardized, it is stacked according to the number of standard tissues (specific site tissues). The kind of the adhesive oil 12 is determined according to the thermal conductivity of the target tissue and the adhesive is applied or the thermal paper 11 is applied in the state in which the adhesive oil 12 is applied The laminated laminated member 10 may be selected and put into an experiment.

After the laminating step S1 of the thermal paper is completed, a preparing step S2 is carried out to prepare the upper surface of the laminating member 10 so as to apply heat.

The preparing step S2 includes a temperature control step S21 of the upper mold frame and a lower mold attaching and pressing step S22. The temperature control step (S21) of the upper plate frame is to adjust the temperature of the upper plate frame to match the temperature of the target tissue. If the targeted tissue is skin, the upper frame (30) made of a heat-resistant silicone material is heated by hot water, and the moisture is removed and placed at the lower end of the bundle of the lamination member (10) will be.

The lower panel 40 is adhered to the upper panel 30 with an adhesive such as a double-sided tape. When the lower panel 40 is to be measured in a curved state, the lower panel 40 is bent in a desired shape and then adhered to the upper panel 30. At this time, the lower plate frame 40 is made of a metal material capable of maintaining plastic deformation and can be maintained in a deformed state. The pressing member 21 is used to fix the lamination member 10 to the upper plate frame 30 and the lower plate frame 40 and at the same time to bring the layers of the thermal paper 11 in the lamination member 10 into close contact with each other.

When the preparing step S2 is completed, a heating step S3 for applying heat to the heat source to be tested is performed in a predetermined region of the upper surface of the lamination member 10. [

In the heating step S3, heat is applied to the upper surface of the lamination member 10, and then a three-dimensional reconstruction step (S5) for reconstructing the thermal image displayed on the thermal paper according to the layer of the lamination member 10 in three dimensions is performed. At this time, the thermal image displayed on the thermal paper by the layer of the lamination member 10 is scanned and input by the computer for each layer, and the lamination member is sequentially laminated on the reference hole 11a passing through the lamination member 10, 10) can be reconstructed into three-dimensional images.

After completing the heating step S3, the thermal conductivity estimation step S4 and the three-dimensional reconstruction step S5 are performed simultaneously or in sequence. The thermal conduction degree estimating step S4 may be performed while performing the three-dimensional reconstruction step S5.

The step of estimating the thermal conductivity S4 is performed by converting the heat damage degree (= color change of the thermal paper) according to the thermal depth of the laminated thermal paper 11 to thermal damage according to the target tissue depth, .

As shown in FIG. 6, the degree of damage of the thermal paper according to the depth of the laminated thermal paper shown on the left side is converted to the damage according to the depth of the skin dermis, which is the target tissue shown on the right side.

First, in this experiment, assuming that each test object is made of the same constituent (homogenous material) and made of a one-dimensional geometric structure, heat is applied to the same area (A), and the condition that the total calories are the same is satisfied . In other words,

? Q /? T = -kA *? T /? X Equation

Therefore, the total calories of the thermal paper and the total calories of the skin are the same. In other words,

-kp * A * (? T /? xpaper) = -kd * A (? T /? xdermis)

At this time, A = sectional area, and ΔT can be omitted because the temperature difference between both ends is equal to both sides. Kp = thermal conductivity of the thermal paper constant, kd = thermal conductivity of the tissue, Δxpaper = depth of the lamination member, and Δxdermis = depth of skin dermis.

Assuming that the total calories reaching the final bottom area (A) are the same, the calorie reached to the bottom of the dermis by the image is calculated to be the same when several layers of thermal paper are laminated. It is possible to simulate the depth of the skin to which the same heat is transferred by the number of laminated layers of thermal paper obtained as described above. That is, the total calories are calculated at the same point.

In Equation (2), since the temperature difference and the cross-sectional area at both ends are the same,

? Xpaper =? Xdermis (kp / kd)

By calculating the implantation, the depth of laminated thermal paper with the same amount of calories as the skin's lowest layer is obtained. Since? Xpaper is the thickness of the thermal paper multiplied by the number of layers,

Number of layers of thermal paper = xdermis * (kp / kd) / Xd

At this time, Xd = the thickness of one sheet of thermal paper.

That is, in the thermal paper laminating step S1

The number of laminated layers of thermal paper = the thickness of the tissue * (kp / kd) / Xd.

In the thermal conductivity estimation step S4

The thermal damage depth of the target tissue = the number of thermosensitive thermal paper layers * Xd * (kd / kp).

For example, in a rat with a skin of 1.52 mm, a lamination model of thermal paper having the same calories as the skin bottom reaches the skin bottom is obtained as follows.

kd = 0.351691 W / mK,

kp = 0.17 W / mK,

DELTA xdermis = 1.52 mm,

Since Xd = 0.08374 mm,

8.7740 layers can be obtained for the number of layers. That is, in a rat having a skin of 1.52 mm in thickness, it is understood that a lamination model of thermal paper having a heat amount equal to the heat amount reaching the skin bottom requires about 9 lamination.

In the three-dimensional reconstruction step S5, after the heat discoloration by heat is sequentially photographed or scanned from the top of the thermal paper 11 constituting the lamination member 10 through the heating step, the image is laminated on the reference hole 11a And reconstruction is performed by reconstructing the thermal image displayed on the lamination member 10 into a three-dimensional image.

Then, the laminated image is converted into a temperature distribution according to the depth of the skin, which is the target tissue obtained in the thermal conductivity estimation step (S4), so that the 3D modeling is performed by the temperature distribution due to thermal conduction according to the depth of the entire skin, You can.

It is also possible to simulate the image of hot fluid flowing by using this apparatus and method assuming that hot oil flows and burns. Particularly, it is very difficult to estimate the fluid image by the mathematical method as it is very complicated because the simulation using the computer itself is very complicated. However, the method according to the present invention is simple because the model itself is simple, It can be easily applied to heat transfer and image estimation.

Such a thermal conductivity measuring apparatus may be used for developing an image protecting apparatus. When heat is applied to the upper portion of the image forming apparatus in a state in which the structure of the image protecting apparatus is placed on the lamination member 10, it is checked whether thermal damage is generated in the lamination member 10 when a certain degree of heat is applied to the protective equipment structure, It is possible to know how safe the equipment is.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.

10:
11: Thermal paper
11a: Reference hole
12: Adhesive oil
21, 22: pressing member
30: Blank frame
40: Lower frame
S1: lamination step
S2: Preparation phase
S21: Temperature control step
S22: Attachment of the lower plate frame and pressing step
S3: heating step
S4: Estimation of thermal conductivity
S5: 3D reconstruction step

Claims (14)

A plurality of thermal paper 11;
A thermal paper lamination member 10 laminated such that the thermal paper 11 is layered; And
And a top plate frame 30 made of a heat-resistant silicone material on which the lamination member 10 is mounted. The image quality can be measured in a state where the thermal paper 11 is laminated. State
The number of laminated layers of the thermal paper 11 = the thickness of the tissue * (kp / kd) / Xd,
Here, kp = thermal paper thermal conductivity constant, kd = thermal conductivity constant of tissue, and Xd = thermal paper thickness.
The method according to claim 1,
(21, 22) for pressing the lamination member (10) so that the thermal paper (11) can be laminated and kept in a close contact state.
delete 4. The apparatus according to claim 3, wherein the upper frame (30)
Is formed on the lower mold frame (40) capable of plastic deformation.
The laminated sheet according to claim 1, wherein the lamination member (10)
Wherein an adhesive oil (12) is applied between the thermal paper (11) and the thermal paper (11) to closely contact the thermal paper (11).
6. The image thermal conductivity measuring apparatus according to claim 5, wherein the contact oil (12) is made of oil or thermal grease.
The image thermal conductivity measuring apparatus according to claim 1, wherein the thermal paper (11) is a K91HG-CE thermal paper.
The image heat conduction measurement device according to claim 2, wherein the pressing members (21, 22) are made of a magnetic material, a clip, a band, or a clamp.
The apparatus according to claim 1, wherein a reference hole (11a) penetrates through the lamination member (10) so as to establish a reference point in three-dimensional modeling.
A thermal paper deposition step S1 for determining the number of sheets of thermal paper 11 constituting the lamination member 10 according to a thermal conductivity of a target tissue;
A top plate frame made of a heat resistant silicone material capable of placing the lamination member 10 capable of maintaining a temperature similar to a target structure so as to apply heat to the lamination member 10 in which a plurality of thermal paper 11 are stacked (S2) comprising a temperature control step (S21) of the upper frame frame for controlling the temperature of the upper frame frame (30);
A heating step (S3) of applying heat to be tested on the upper surface of the lamination member (10); And
A step of estimating the degree of thermal damage according to the depth of the thermal head indicated in the thermal paper 11 in the layered member 10 by converting the thermal damage degree into the thermal damage according to the depth of the targeted tissue, S4) is performed to obtain a target thermal conduction process and its distribution pattern,
In the thermal conductivity estimation step S4
Kd = thermal conductivity coefficient constant, kd = thermal conductivity constant of tissue, and Xd = thermal paper thickness. In this case, kd is the thermal conductivity constant of the tissue, kd is the thermal conductivity constant of the tissue, and Xd is the thickness of the thermal paper. Of the thermal conductivity.
11. The method of claim 10, wherein the preparing step (S2)
(S22) of attaching the upper frame (30) to the lower frame (40) after the lower frame (40) is plastic-deformed to form a curved surface when measurement of the curved surface is required, Of the thermal conductivity.
11. The method according to claim 10, wherein in the heating step (S3)
Dimensional reconstructing step (S5) of reconstructing the thermal image displayed on the thermal paper 11 in three dimensions after applying the heat to be tested on the upper surface of the lamination member 10 for each layer of the lamination member 10; And the image is measured.
11. The method of claim 10, wherein in the thermal paper lamination step (S1)
The number of laminated layers of the thermal paper 11 = the thickness of the tissue * (kp / kd) / Xd,
Here, kp = thermal paper thermal conductivity constant, kd = thermal conductivity constant of tissue, and Xd = thermal paper thickness.
delete
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